He’s a good man, Savannah Sabrina. On Friday, Sabrina Carpenter took the stage for her debut performance at Coachella. During her set, Barry Keoghan offered some more evidence that his house is where her other sock is. (The Eras Tour opener and the Saltburn actor have been romantically linked since December of last year, and were spotted kissing this February.) Some have speculated that this is a PR relationship, but even if that’s true, Keoghan seems to be playing his part well. While Carpenter performed “bet u wanna” on stage, he flexed his IG boyfriend skills by crossing his legs, filming a fancam of her, and approvingly nodding while doing so. When she and her dancers began moving across the motel-themed set, he dutifully followed her with his phone. Very supportive! Ayo Edebiri is still…